Add a path to get all collections in one manifest.

Closes #339

app/controllers/collections_controller.rb

@@ -1,5 +1,6 @@
 class CollectionsController < ApplicationController
   include CurationConcerns::CollectionsControllerBehavior
+  skip_load_and_authorize_resource only: :index_manifest
 
   def form_class
     CollectionEditForm
@@ -17,12 +18,24 @@ def manifest
     end
   end
 
+  def index_manifest
+    respond_to do |f|
+      f.json do
+        render json: all_manifests_builder
+      end
+    end
+  end
+
   private
 
     def manifest_builder
       ManifestBuilder.new(presenter, ssl: request.ssl?, services: AuthManifestBuilder.auth_services(login_url, logout_url))
     end
 
+    def all_manifests_builder
+      AllCollectionsManifestBuilder.new(nil, ssl: request.ssl?)
+    end
+
     def login_url
       main_app.user_omniauth_authorize_url(:cas)
     end

app/presenters/all_collections_presenter.rb

@@ -0,0 +1,23 @@
+class AllCollectionsPresenter < CollectionShowPresenter
+  def initialize(current_ability = nil)
+    @current_ability = current_ability
+  end
+
+  def title
+    "Plum Collections"
+  end
+
+  def description
+    "All collections which are a part of Plum."
+  end
+
+  def creator
+    nil
+  end
+
+  private
+
+    def ordered_ids
+      ActiveFedora::SolrService.query("active_fedora_model_ssi:Collection", rows: 10_000, fl: "id").map { |x| x["id"] }
+    end
+end

app/services/all_collections_manifest_builder.rb

@@ -0,0 +1,27 @@
+class AllCollectionsManifestBuilder < ManifestBuilder
+  def initialize(record = nil, ssl: false)
+    super
+  end
+
+  private
+
+    def root_path
+      "#{helper.root_url(protocol: protocol)}collections/manifest"
+    end
+
+    def protocol
+      if @ssl
+        :https
+      else
+        :http
+      end
+    end
+
+    def helper
+      @helper ||= ManifestBuilder::ManifestHelper.new
+    end
+
+    def record
+      @record ||= AllCollectionsPresenter.new
+    end
+end

app/services/manifest_builder/record_property_builder.rb

@@ -1,10 +1,9 @@
 class ManifestBuilder
   class RecordPropertyBuilder
     attr_reader :record, :path
-    def initialize(record, path, ssl: false)
+    def initialize(record, path)
       @record = record
       @path = path
-      @ssl = ssl
     end
 
     def apply(manifest)

config/routes.rb

@@ -8,17 +8,26 @@
   end
   mount Hydra::RoleManagement::Engine => '/'
 
-  mount Hydra::Collections::Engine => '/'
-  mount CurationConcerns::Engine, at: '/'
   resources :welcome, only: 'index'
   root to: 'welcome#index'
+  # Add URL options
+  default_url_options Rails.application.config.action_mailer.default_url_options
+
+  # Collections have to go before CC routes, to add index_manifest.
+  resources :collections, only: [] do
+    member do
+      get :manifest, defaults: { format: :json }
+    end
+    collection do
+      get :manifest, defaults: { format: :json }, action: :index_manifest
+    end
+  end
+  mount Hydra::Collections::Engine => '/'
+  mount CurationConcerns::Engine, at: '/'
   curation_concerns_collections
   curation_concerns_basic_routes
   curation_concerns_embargo_management
 
-  # Add URL options
-  default_url_options Rails.application.config.action_mailer.default_url_options
-
   namespace :curation_concerns, path: :concern do
     resources :multi_volume_works, only: [] do
       member do
@@ -40,12 +49,6 @@
     end
   end
 
-  resources :collections do
-    member do
-      get :manifest, defaults: { format: :json }
-    end
-  end
-
   namespace :curation_concerns, path: :concern do
     resources :scanned_resources, only: [:new, :create, :show], path: 'container/:parent_id/scanned_resources', as: 'member_scanned_resource'
   end

spec/controllers/collection_controller_spec.rb

@@ -16,4 +16,20 @@
       expect(response).to be_success
     end
   end
+
+  describe "#index_manifest" do
+    let(:user) { FactoryGirl.create(:admin) }
+    before do
+      sign_in user
+    end
+    it "returns a manifest for all collections" do
+      FactoryGirl.create(:collection)
+      allow(AllCollectionsManifestBuilder).to receive(:new).and_call_original
+
+      get :index_manifest, format: :json
+
+      expect(AllCollectionsManifestBuilder).to have_received(:new).with(nil, ssl: false)
+      expect(response).to be_success
+    end
+  end
 end

spec/presenters/all_collections_presenter_spec.rb

@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+RSpec.describe AllCollectionsPresenter do
+  subject { described_class.new }
+
+  it "can be used to build a manifest" do
+    expect { AllCollectionsManifestBuilder.new(subject).to_json }.not_to raise_error
+  end
+
+  it "has a title" do
+    expect(subject.title).to eq "Plum Collections"
+  end
+
+  it "has a description" do
+    expect(subject.description).to eq "All collections which are a part of Plum."
+  end
+end

spec/routing/collection_manifest_spec.rb

@@ -7,4 +7,8 @@
   it "routes to the manifest action" do
     expect(get manifest_collection_path(id: "1")).to route_to controller: "collections", action: "manifest", format: :json, id: "1"
   end
+
+  it "can route an index manifest" do
+    expect(get "/collections/manifest").to route_to controller: "collections", action: "index_manifest", format: :json
+  end
 end

spec/services/all_collections_manifest_builder_spec.rb

@@ -0,0 +1,22 @@
+require 'rails_helper'
+
+RSpec.describe AllCollectionsManifestBuilder do
+  subject { described_class.new }
+  context "when there are collections" do
+    let(:manifest_json) { JSON.parse(subject.to_json) }
+    it "builds them as sub-manifests" do
+      FactoryGirl.create(:collection)
+
+      expect(manifest_json["manifests"].length).to eq 1
+    end
+    it "has an ID" do
+      expect(manifest_json["@id"]).to eq "http://plum.com/collections/manifest"
+    end
+    context "when SSL is set" do
+      subject { described_class.new(nil, ssl: true) }
+      it "can have an SSL ID" do
+        expect(manifest_json["@id"]).to eq "https://plum.com/collections/manifest"
+      end
+    end
+  end
+end